Device for emptying pans of clay-mills.



No. 728,940. PATENTED MAY 26, 1908. R. KYLER.

DEVICE FOR EMPTYING FANS OF CLAY MILLS.

APPLICATION FILED MAY 17, 1902.

N0 MODEL.

UNITED STATES Patented May 26, 1903.

PATENT ()FFICE.

REX KYLER,OF LOCKHAVEN, PENNSYLVANIA.

SPECIFICATION formingpart of Letters Patent No. 728,940, dated May 26,1903.

Application filed May 1'7 1902. Serial No. 107,709- (No model.)

To whom it may concern:

Be it known that I, REX KYLER, a citizen of the United States, residingat Lockhaven, in the county of Clinton and State of Pennsylvania, haveinvented certain new and useful Improvements in Devices for EmptyingPans of Clay-Mills; and I do herebydeclare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to chasing-mills for crushing, grinding, andworking plastic clay, ore, or other material, and more particularly todevices for automatically emptying the revolving pan and delivering theground clay to the place of use or to a receptacle.

The object of my invention is to provide for more effectively andrapidly scooping up the clay from the revoluble pan, shearing it off ina ribbon onto a oonveyer-belt, and delivering it either at the rear endof the conveyer or cutting off a portion or whole of the material on theconveyer-belt and delivering it at one side of the conveyer,so that thetable and operator at the delivery end of the conveyer need not bedisturbed during the con- Figure 1 represents an elevation of a millwith a part broken away and my improved emptying device in operativeposition. Fig. 2 represents a top plan view of the same. Fig. 3represents a transverse section of the scoop and shear on the line 3 3.

My pan-emptying devices are made with particular reference to use in awet pan of a clay-tempering mill in which clay, sand, and water arecrushed and thoroughly mixed into a plastic mass or dough suitable formolding into various articles. The mass of plastic clay being tenacious,requires not only a scoop but a shear-off having an inclined edge forshearing 0d a ribbon from the tenacious mass and depositing it on aconveyer-belt traveling below the same for emptying the revolving pan.

The pan 1 is mounted on the central shaft 3, which is supported on thefoundation 4 in a well-known manner. In practice suitable gearing isconnected with shaft 3 for revolving the pan. The crushing-rollers 6 areloosely mounted on the horizontal shaft 7, having bearings in thestandards 5 in the usual manner. In the operation of the mill the clayas it is ground and worked by the crushing-rollers and mixed with waterinto a plastic mass is driven by centrifugal force toward thecircumferential rim 2 of the pan in a favorable position to beautomatically taken up by my scoop, sheared off in a ribbon by theshearing device thereof, dropped onto the con veyer-belt,and conveyedthereby to the delivery end thereof or to the cut-off, which deflects itfrom the conveyor-belt to a lateral discharge-opening, so that theground plastic clay can be more expeditiously handled and removedfronrthe mill.

My scoop and conveyer, being secured together, are setin an'inclinedposition,with the lower end of the scoop near the bottom of therevoluble pan, as shown in Fig. 1. The scoop 8 is made tapering with acomparatively narrow point and is secured to the frame 11 of theconveyer. The outer side is made comparatively low and is secured to theshort standard 8. The inner side is curved and has an inclined edgeforming the shear 9. The rear part-of this shear 9 is curved upward andoutward over the conveyor-belt and is secured to the curved standard 9,as shown in Fig. 3. The central rear portion of the scoop between theshear 9 and the opposite side is cut away to provide an opening 8 forthe conveyerbelt 14. Obviously the scoop is not limited in itsapplication and use to any particular kind of conveyor or to theparticular type of clay-mill herein shown and described. Theconveyer-frame 11 is provided at its delivery end with the roller 12,set in an adjustable journal-box 12 and at its lower end with the roller13, over which rollers is passed the conveyer-belt 14. Othersupporting-rollers 12 are journaled in the frame 11. The upper deliveryend of the conveyorframe 1 l is supported upon the vertical standvconveyer.

ards 18. The working table 19 is preferably placed adjacent to thedelivery end of the The outer side of the conveyorframe 11 is providedwith an adjustable cutoff 15, Which is pivotally connected by a pin orhinge 16 to the frame 11 and has a lower beveled and sharpened end 17adjacent to the rear end of the scoop. This cut-off 15 can be readilyswung inward in an inclined position to the point X at the inner side ofthe conveyor, as indicated by dotted lines in Fig. 2, for the purpose ofcutting off and deflecting the ribbon of clay on the conveyerbelt to thelateral discharge-opening at Y. A truck 20 or other receptacle may beplaced below the lateral discharge-openingY for receiving the claywhenever it is to be deflected and discharged at the lateral opening.

In practice the leading edge or point of the scoop 8 will be placed ashort distance above the bottom of the pan in the most favorableposition for engaging with the ground mass of plastic clay and removinga ribbon thereof as the pan revolves, the scoop being suspended orsupported in the desired position in any well-known manner. Suchsuspending or supporting means may also be arranged for raising thescoop above the pan when-desired. Since such supporting device does notform a part of my invention, it is not herein illustrated. As theplastic clay is taken up by the scoop itis sheared off in a ribbon bythe curved shear 9, having a long inclined edge, and isthen properlyguided thereby and dropped onto the conveyer-belt 14, by means of whichit is carried up the conveyer and discharged at the rear upper end Zthereof onto the molding-table 19, where the attendant works it into themolds. When the mill is running, it will grind a great deal more claythan can be used by one molder at the table 19, and it is desi rable,therefore,to provide for discharging the ground plastic clay withoutremoving the table 19 or disturbing the molder who is working there. Inorder to provide for the continuous running of the mill and discharge ofthe ground plastic clay, I have devised the cut-off 15, which at theproper time after the molder at table 19 has been supplied will be swunginto the inclined position indicated by dotted lines in Fig. 2, with itsinner point at X against the inner wall of the frame ll,thereby forminga lateral opening at Y. The ribbon of ground plastic clay will bedischarged at Y onto the truck 20 or other receptacle, by means of whichit can be conveyed to any place of use. When the molder at table 19requires a further supply of clay, the cut-0d 15'will be swung back intothe normal position in the outer wall of frame 11, and the clay willthen be conducted by the belt 14 and discharged onto the table 19. Itwill be evident that by means of this device the mill may be keptrunning more continuously, the molder at table 19 left undisturbed athis work, and the clay discharged, when desired, at the lateral openingY.

A belt-pulley 21 is secured to the shaft of the rear roller 12 forapplication of the powerbelt to drive the conveyor-belt 14.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s

1-. In a clay-mill, the combination with the revoluble pan, of a conveyer-frame having a traveling belt, a scoop and a shear-off secured tothe inner end of said frame, said shear-off being curved upward andhaving an inclined shearing edge above the belt, substantially as andfor the purpose described.

2. In a clay-mill, the combination with the revoluble pan, of aconveyer-frame having a conveyer-belt, a scoop secured to the lower endof said frame and having a rearwardlyextending lateral shear-off curvedup over said belt and having an inclined edge tapering from its rear endto the entering edge of the scoop, whereby the clay, as received by thescoop, will be sheared off in a ribbon and caused to drop on theconveyer-belt, substantially as described.

3. A pan-emptier scoop constructed with a narrow entering end, aturned-up inclined side, an opposite lateral shear-off made wide at therear, curved inward over the bottom and having an inclined tapering edgeto said entering end, and the bottom of the scoop having an opening 8between said tapering side and the opposite shear-off, substantially asand for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

REX KYLER.

Witnesses:

L. C. ANDREWS, WARREN KYLER.

